html,
body,
.container-fluid {
    height: 100%;
}
.top_bar {
    width: 100%;
    height: 3.5em;
    background-color: #222222;
}

.top_bar p {
    color: white;
    line-height: 3.5em;
    margin-left: 2em;
    font-weight: bold;
}

.container-fluid{
    width: 17em;
    background-color: #F5F5F5;
    float: left;
}
.nav{
    margin-left: 3em;
    line-height: 2em;
    margin-top: 2em;
}
.active {
    background-color: pink;
}

.nav {
    width: 200px;
    height: 30px;
}

.nava{
    width: 200px;
    height: 30px;
    border: 1px solid #000;
    display: inline-block;
}